Feature: 1. Powerful sterilization: Effectively kills 99.99% of bacteria, protecting fish health. 2. Rapid disinfection: Can clean the aquarium within 30 minutes, efficient and time-saving. 3. Easy to operate: One-button control makes the cleaning process more convenient. 4. High-quality quartz glass: Durable and easy to clean, but be careful to put it lightly to avoid short circuit. 5. Safety tips: Avoid looking at the UV lamp for a long time and avoid direct skin contact with UV light. Specification: This UV sterilization lamp is an ideal disinfection tool for aquariums, effectively killing 99.99% of bacteria, quickly cleaning the aquarium, and providing a clean living environment for your fish. Features: Powerful sterilization: Effectively kills 99.99% of bacteria, protecting fish health. Rapid disinfection: Can clean the aquarium within 30 minutes, efficient and time-saving. Easy to operate: One-button control makes the cleaning process more convenient. High-quality quartz glass: Durable and easy to clean, but be careful to put it lightly to avoid short circuit. Safety tips: Avoid looking at the UV lamp for a long time and avoid direct skin contact with UV light. Specifications: Suitable aquarium size: Below 50cm/19.7in (5W), Below 200cm/78.7in (11W) Package size: 8cm/3.15in 4.5cm/1.77in 26cm/10.24in UVC-5 Package weight: 0.2kg/0.44lb UVC-11 Package weight: 0.22kg/0.49lb Package list: 1* UV Sterilization Lamp Package List: 1* UV Sterilization Lamp